Mattress cover



FIG. 1 is a front elevational view of a mattress cover design;

FIG. 2 is a rear elevational view of the design of FIG. 1;

FIG. 3 is a left side elevational view of the design of FIG. 1;

FIG. 4 is a right side elevational view of the design of FIG. 1;

FIG. 5 is a top view of the design of FIG. 1;

FIG. 6 is a bottom view of the design of FIG. 1; and,

FIG. 7 is a perspective view of the design of FIG. 1.

The broken lines shown in the drawings are included for the purpose of illustrating the unclaimed boundary and unclaimed portions of the mattress cover. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a mattress cover, as shown and described. 